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Definition
By Mayo Clinic staff
A breast lump is a growth of tissue that develops within your breast. It may be described as a mass, growth, swelling, thickness or fullness.
A breast lump can vary in the way it looks and feels. If you have a breast lump, you may notice:
- A distinct lump with definite borders
- A thickened, slightly more prominent area in your breast that's different from surrounding breast tissue
- Other breast changes, such as redness, dimpling or pitting of the skin
- One breast that's noticeably larger than the other (breast asymmetry)
- Nipple changes, such as a nipple that's pulled inward (nipple inversion) or spontaneous fluid discharge from your nipple
- Breast pain or tenderness
Sometimes, a breast lump is a sign of breast cancer. That's why you should seek prompt medical evaluation. Fortunately, however, most breast lumps result from noncancerous (benign) conditions.
References
- Non-cancerous breast conditions. American Cancer Society. http://www.cancer.org/acs/groups/cid/documents/webcontent/003180-pdf.pdf. Accessed Sept. 20, 2012.
- Bope ET, et al. Conn's Current Therapy. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-1-4377-0986-5..C2009-0-38984-9--TOP&isbn=978-1-4377-0986-5&about=true&uniqId=236797353-5. Accessed Sept. 20, 2012.
- Lentz GM, et al. Comprehensive Gynecology. 6th ed. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/linkTo?type=bookPage&isbn=978-0-323-06986-1&eid=4-u1.0-B978-0-323-06986-1..C2009-0-48752-X--TOP. Accessed Sept. 20, 2012.
- Sabel MS. Breast masses and other common breast problems. http://www.uptodate.com/index. Accessed Sept. 20, 2012.
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